GREG
发表于 2025-4-1 03:06:01
https://doi.org/10.1007/978-1-349-18507-8achinery, but none more so than in fluid or turbo-machinery such as fans, pumps and compressors. In addition, savings in running costs can usually justify a small increase in first cost, even for the humble fan.
妈妈不开心
发表于 2025-4-1 09:00:47
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安慰
发表于 2025-4-1 12:06:43
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SLUMP
发表于 2025-4-1 15:12:33
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coagulation
发表于 2025-4-1 21:27:29
Conference proceedings 2000on. Electric motor systems use over half of all electricity consumed in developed countries. Typically about 70% of the electricity which is used in the industrial sector and about 35% of the electricity used in the commercial sector in the EU is consumed by motor systems. In industry, a motor on av